posps of a user that are tagged as oracle

select u.DisplayName, 'https://stackoverflow.com/questions/'+CONVERT(varchar(10),a.id)
from users u, posts q, posts a
where u.id=a.OwnerUserId
and a.ParentId=q.id
and a.PostTypeId=2
and q.tags like '%apex%'
and q.PostTypeId=1
and u.id in(15992)